Asthma and Persistent Wheeze in the Harvard Six Cities Study Frank E. Speizer, M.D., F.C.C.P. CHEST Volume 98, Issue 5, Pages 191S-195S (November 1990) DOI: 10.1378/chest.98.5_Supplement.191S Copyright © 1990 The American College of Chest Physicians Terms and Conditions
Figure 1 Annual levels of sulfur dioxide (SO2), total suspended particulates (TSP), and suspended sulfate (SS), by city, Harvard Six Cities Study. (Reproduced by permission from ref 5.) CHEST 1990 98, 191S-195SDOI: (10.1378/chest.98.5_Supplement.191S) Copyright © 1990 The American College of Chest Physicians Terms and Conditions
Figure 2 Annual levels of fine particles (<2.5 μm) by city. CHEST 1990 98, 191S-195SDOI: (10.1378/chest.98.5_Supplement.191S) Copyright © 1990 The American College of Chest Physicians Terms and Conditions
Figure 3 Prevalence of bronchitis in the last year stratified by presence or absence of asthma/wheeze, by level of annual respirable particulates (PM15). (Reproduced by permission from ref 8.) CHEST 1990 98, 191S-195SDOI: (10.1378/chest.98.5_Supplement.191S) Copyright © 1990 The American College of Chest Physicians Terms and Conditions
Figure 4 Level of pulmonary function in children, stratified by presence or absence of asthma/wheeze by level of annual respirable particulates (PM15). (Reproduced by permission from ref 8.) CHEST 1990 98, 191S-195SDOI: (10.1378/chest.98.5_Supplement.191S) Copyright © 1990 The American College of Chest Physicians Terms and Conditions
Figure 5 Relative odds of reported symptoms in adults by cumulative levels of occupational dust exposure, adjusted for age and smoking. (Reproduced by permission from ref 9.) CHEST 1990 98, 191S-195SDOI: (10.1378/chest.98.5_Supplement.191S) Copyright © 1990 The American College of Chest Physicians Terms and Conditions